Device for side-filing saw-teeth.



Np. 717,981. PATENTED JAN. 6,1903.

` a F. D. FOGGIN.

DEVICE FOR SIDE FILING SAW TEETH.

APPLICATION FILD MAY '10, 1902.

NO MODEL. 2 SHBTS-SHEET 1.

UNITED* STA'rEs PATEN'T OFFICE.

FRANCIS D. FOGGIN, OF NEAME, LOUISIANA.

DEV ICE FOR SIDE-'FILING SW-TEETH.

SPECIFICATION forming part of Letters Patent No. 717,981, dated January 6, 1903.

Application filed May 1011902.

y To all whom it may concern:

Be it known that I, FRANCIS D. FOGGIN, a citizen of the United States, residing at Teeth, of which the following is a specification.

My invention has relation toimprovements in devices for side-filing saw-teeth; and the object is to provide a mechanism for the purposes intended which is of simplified construction, efficient and accurate in operation, and durable in use. l

With these objects in view my invention consists in the novel construction of parts and their aggroupment in operative combination, as will be hereinafter fully described and the novelty thereof particularly pointed out and distinctly claimed. i

I accoinplish the purposes of the invention by the mechanism illustrated in the accompanying drawings, to be taken as a part hereof, and in which- Figure 1 is a view in side elevation of the complete device, showing it as operatively applied to a saw. Fig. 2 is a top plan View of the device. Fig; 3 is a view in elevation, partly in'vertical section. 'Fige is a front elevat-ion showingthe vise or clamping-frame. Fig. 5 is a longitudinal section through the frame in which the rotary files are journaled, showing the files as held by the beveled clamping-'plates Fig. 6 is a detail view of the front brace-bar.

It will be premised that while the device is herein described as applied to side-dressing the teeth of a circular saw it will be apparent that it may be utilized in dressing the teeth of band and gage saws.

Referring to the drawings, A designates a vise or clainping frame composed of two limbs 1 2, integrally united bya head part and formed with central Vertical slot 3. limb 2 at its lower end is formed with a rigid jaw 4, having its clamping-face projected inward beyond the line of the main slot, as shown at 5 in Fig. 4 of the drawings. The

other limb 1 of the vise is formed with a boss 6, through which a threaded aperture is made, in which the stem of a clamping-screw 7 e11- gages.

The clamping-screw 7 is formed with Thev `Serial No.106,819. (No model.)

a head S, through which an actuating-bar 9 is ``arranged to turn the screw. It will be perceived that the vise is arranged with the slot straddling the saw and is clamped to the saw by the screw. The upper end of the vise is formed with an inclined or overhanging extension 10, having a slot 11 therethrough, the upper and lower walls of which are made flar- `ing in order that the bracebar projected through the slot may be rocked vertically within the slot to set its point or free end to the required position, as will be hereinafter mentioned. To the face of the vise is secured a rest-bracket 12, slotted vertically, as at 13, in order that it may be adj usted lengthwise to suit different-sized saws. The bracket is held in the dcsired position by a set-screw 14:, let into the vise through the slot, with its head bearing on the edges of the slot, as shown in Fig. lof the drawings. The bracket is formed with a horizontally-projecting arm 15, preferably formed with an upwardlycurved free end 16, adapted to rest on the crown of a saw-tooth, as shown in the drawings, and thus keep the device in relative position on the saw.

It will be perceived that through the instrumentality of the above-describedbracket the device can be adjusted tosuit saws of difierent diameters and that after being adjusted it Will require no further adjustment for that particular saw.

17 designates the front brace-bar, consisting of a flat bar adjustably projected through the slot in the extension 10 and also through the slot 13 in the rest-bracket. The lower end of this bar is formed with a V-shaped recess 19, terminating in a relief-recess 20, so as to engage over a tooth of the saw, with the point of the tooth extending into the reliefrecess free from liability of being damaged. The bar 17 is slidingly adjustable in the slot ll, and' also the lower end is adjustable upward and downward by reason of the flaring form of the slot 11 and is held in adjusted position by a set-screw 21, let through the side wall of that slot and bearing on the bar. It will be perceived that the device is held to the saw in relative position to the tooth'being acted on by the bar 17 and the arm 15 of the rest-bracket.

22 designates a bracket having a straight IOO inner face setting against the face of the vise and a straight upper face at right angles to the inner face on which one end of the bearing-sleeves of the file-supports rest. The bracket 22 is formed or provided with projecting threaded stems 23, passing through the upper portion of the vise and provided with clamping-nuts 24 25,whereby the bracket is clamped firmly to the vise. Projecting vertically from the upper face of the bracket 22 are two rigid threaded bearing-stems 26 27, on which are mounted the bearing-sleeves 28, held against Vertical displacement by nuts 29 engaging on the threaded ends of the stems. From the bearing-sleeves 28 project socketed sleeves 30 31, provided with interior screw-threads. These socket-sleeves, it will be observed, have a lateral movement on the bearing-stems. On the upper faces of the socket-pieces 30 31 are formed or secured short adjusting-plates 32 33, having inclined inner edges 34 35, against which the end of adj usting-screws 36, let through the vise, bear and serve to adj ust the socket-sleeves laterally on their bearings. The outer ends of the plates 32 33 are made angular, the points of the angles being eccentric to the axis of the bearing stems, as shown in the drawings. To the outer side faces of the vise are secured fiat Springs 34rL 35a, the free ends of which eXert their force on the angle on the plates 32 33 to hold the socket-sleeves from moving outward farther than the adjustment requires and to press them constan tly inward when the adjusting-screws are moved outward and away from contact with the edges of the plates 32 33.

37 designates duplicate supportingbars having their rear portions provided With screw threads to engage in the threaded sockets of the parts 30 31 and there held in any adjusted position by a jam-nut 38, as shown in the drawings. The outer portions of the bars 37 are bent downward at an angle from their threaded stems to carry the rotary files down on the saw to any required position. On the outward portion of each plane portion of the supporting-bars is adjustably and slidingly mounted a bearing-block 39, the bars being projected through the blocks and secured therein by set-screws 40 at any set position. In the bearing-blocks 39 are formed horizontally disposed and alining bearings 41, wherein are journaled the Stud-shafts 42 of the rotary file-disks 43. The ends of the studshafts project beyond the outer faces of the blocks and have mounted thereon Crank-arms 44, by which the disks are rotated. The disks are integral with their shafts and are of such diameter as may be determined on to fit them for the work to be done. To the outer faces of the rotary disks are arranged the rotary files 45, consisting of rings of the same diameter as that of the disks, and are provided with the usual cutting-faces and have the inner edge beveled, as shown. The files are secured in position by means of clamping-disks 46, having beveled perimeters to Wedge into the bevels of the files, and are clamped to hold the files in position by clamping-screws 47, let

into threaded sockets formed in the ends of the shafts.

The utilization and operation of the device are as follows: The mounting and adjustment are accomplished by placing the vise on the saw and clamped thereto in position. The tooth-bar and the rest-bracket may then vbe adjusted to the positions required and then clamped fast. The file-blocks are then adjusted on the inclined arms to bring the rotary files in position. Then by means of the set or adjusting screws 36 the file-disks are adjusted, as may be required, to bring the files into contact with the faces of the sawteeth, being held by the pressure of the Springs 34 35, and the device is ready for operation. This is effected simply by turning the cranks. When the dressing at that point is finishod, the vise-clamp is released and the device moved to the next point of the work and then clamped.

Having described my invention, what I claim, and desire to secure by Letters Patent, 18-,

1. A saw-tooth-dressing machine, comprising a vise adapted to straddle the saw and be clamped thereto, a forwardly-extending support slidingly projected through the head of the vise, a vertically-adjnstable plate secured to the rear face of the vise and formed with an arm projecting therefrom, rotary files carried by the vise, and means to rotate the files.

2. A saw-tooth-dressing machine comprising a vise adapted to straddle the saw, and formed with a slot through its upper end, a clamping-screw to clamp the vise to the saw, a rearwardly-extending bar adjustably projected through the slot in the upper end of the vise to engage the teeth of the saw, a for- Wardly-extended bar to rest on the teeth of the saw, rotatable files to Aengage the saw on opposite sides, and means to rotate the files.

3. Ina saw-tooth-dressing machine, a vise adapted to be clamped to the saw, oppositelyarranged arms pivotally connected to the vise, supports secured in the arms, bearingblocks on the supports, rotatable disks having their bearings in the blocks, and circular files secured to the faces of the disks.

4. In a saW-tooth-dressing machine, a vise adapted to be clamped to the saw, forward and rearward supports arranged to engage with their free en ds the teeth of the saw, oppositely-arranged arms pivotally connected to the vise to swing on a horizontal plane, Springs secured to the vise and bearing on the arms to press them toward each other, supports extending from said arms, and inclined downward, bearing-blocks adjustably mounted on the supports and formed with shaft-bearings, disks having integral shafts mounted in said bearings, and files secured to the faces of the disks.

5. In a saw-tooth-dressing machine, a vise IOO IIO

i l l i adapted to straddle the saw, and formed with a fiaring slot through its upper end, a clamping-screw let through one of the jaws of the vise, a bar adjustably disposed through said slot, and arranged to engage the saw-teeth With its lower end, a rest-bracket adj ustably secured to the outer face of the vise and formed With a horizontally-positioned arm to rest on the saw-teeth, arms pivotally connected to the vse movable laterally on their pivots and provided with plates at their rear ends, adjusting-screws to adju'st the position of the arms, Springs to hold them in adjusted position, supporting-rods extending from the arms, bearing-bloeks adjustably monnted on the rods and formed With bearings, rotatable disks having shafts mounted in the bearings, and files secured to the faces of the disks.

6. In a saW-tooth-dressing machine, the combination With means to hold the device on the saw, of laterally-swinging arms seoured to the holding means, screws to adjust the arms l-aterally, Springs to hold them in adj usted position, supporting-rods extending from the onter ends of the arms, bearingblocks mounted on the rods, shafts jonrnaled in the blocks, having disks on their inner ends, files secured to the faces of the disks, and eranks to rotate the shafts.

In testimony Whereof I affix my signature in presence of two Witnesses.

FRANCIS D. FOGGIN.

Witnesses:

W. B. GIBBoNs, A. B. FINKE. 

